Oracle VM VirtualBox: Ticket #3910: VT-x/AMD-V options are disabled when the after suspend on hosthttps://www.virtualbox.org/ticket/3910
<p>
When I suspend my HOST box and then awaken it again, VBox doesn't run my 64-bit guest VM and
gives this error:
</p>
<p>
<em>VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit
guest will fail to detect a 64-bit CPU and will not be able to boot. Please ensure that
you have enabled VT-x/AMD-V properly in the BIOS of your host computer.</em>
</p>
<p>
I rebooted and entered my BIOS. All my virtualization options are set to enable.
</p>
<p>
The only way to fix this is to cold boot the system (i.e. totally power down then turn on). If I just reboot, the problem is <strong>not</strong> solved and the 64-bit VM does not work giving that error.
</p>
<p>
I have confirmed this on two Linux Hosts (Ubuntu Intrepid amd64 and
Arch x86_64) and on a Windows Host (Windows XP Pro 64-bit edition SP2). My VM's in all
three cases were also a WinXP 64-bit VM and an Arch Linux 64-bit VM.
</p>
en-usOracle VM VirtualBox/graphics/vbox_logo2_gradient.pnghttps://www.virtualbox.org/ticket/3910
Trac 0.12grayskySat, 02 May 2009 09:44:24 GMTattachment sethttps://www.virtualbox.org/ticket/3910
https://www.virtualbox.org/ticket/3910
<ul>
<li><strong>attachment</strong>
set to <em>VBox.log</em>
</li>
</ul>
TicketgrayskySat, 02 May 2009 09:49:02 GMThttps://www.virtualbox.org/ticket/3910#comment:1
https://www.virtualbox.org/ticket/3910#comment:1
<p>
Sorry guys, the error I quoted above was from version 2.2.0 of VBox. I have since updated to version 2.2.2 and the same problem is present w/ v2.2.2 but the text in the error is a little different, it reads simply:
</p>
<pre class="wiki">Failed to start the virtual machine Arch64. VT-x is not available. (VERR_VMX_NO_VMX). Unknown error creating VM (VERR_VMX_NOVMX).
Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
Console
Interface:
</pre>
TicketgrayskySat, 02 May 2009 09:50:29 GMThttps://www.virtualbox.org/ticket/3910#comment:2
https://www.virtualbox.org/ticket/3910#comment:2
<pre class="wiki">Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole 9511bc54-15ee-4ddf-808e-472aba03809c
</pre>
Ticketsandervl73Sat, 02 May 2009 10:09:01 GMTstatus changed; resolution sethttps://www.virtualbox.org/ticket/3910#comment:3
https://www.virtualbox.org/ticket/3910#comment:3
<ul>
<li><strong>status</strong>
changed from <em>new</em> to <em>closed</em>
</li>
<li><strong>resolution</strong>
set to <em>worksforme</em>
</li>
</ul>
<p>
Try to find an upgrade for your BIOS. It messes up VT-x after resume. Not a <a class="wiki" href="https://www.virtualbox.org/wiki/VirtualBox">VirtualBox</a> bug.
</p>
Ticket